Journal or winder shaft for paper machines



March 1-7, 1925.

' B. LARSON JOURNAL O R WINDER SHAFT FOR PAPER MACHINES Filed Aug. 1.6,1924 {Patented Mar. 17, 1925.

PATENT OFFICE.

BENNETT LARSON, 0F BHINELANDER, WISCONSIN.

JOURNAL OR WINDER SHAFT FOB PAPER MACHINES.

To all whom it may concern:

Be it known that I, BENNETT LARSON, a citizen of the United States,residing at Rhinelander, in the county of Oneida and State of Wisconsin,haveinvented certain new and useful Improvements in Journal or llVinderShafts for Paper Machines, of which the following is a specification,reference being had to the accompanying'drawings. t

This invention relates to improvements in journal or winder shafts foruse in the formation of paper rolls, and more par ticularly to that typeof winder shaft shown in my prior Patent #l,033,4@28. In this patent Ihave disclosed a shaft, and more particularly a winder shaft, formed intwo substantially semicircular segments connected by hinge blocks aboutwhich the sections may be moved toward or away from one another toincrease or decrease the effective size of theshaft, so that the shaftmay be used for winding the roll and collapsed to be withdrawn from theformed roll, thus eliminating the jamming of the roll and the necessityof splitting the same which ordinarily occurs at intervals when a solidshaft is employed. 7 Y

:Apartieular object of the invention is to provide means positivelylimiting the movement of the shaft sections when the same are at theirmaximum diameter. In the constructionabove referred to the sections ofthe shaft are shifted longitudinally of one another by means of a springand will occasionally, through the influence ofsaid spring, move sorapidly from an open to a closed position as to cause injury to thehands of the operator. This positive stop is for the purpose. oflimiting movement of the sections under influence of said spring to thepoint at which they are spaced apart the greatest possible distance,thus insuring 7 that normally the shaft will be maintained at the propersize for use and thus eliminat ing the danger of such aceidents.

A further object of the invention is to provide a modification of thisstructure permitting use of the same as a journal shaft, the ends of thesections being provided with trunnions for operating in the j ournals.

These and other objectsI attain by the construction shown in theaccompanying drawings, wherein for the. purpose of illus per roll.

Application filed August 16, 1924. Serial No. 732,535.

tration is shown a preferred embodiment of myginvention and wherein s aL lgure 1 1s a perspective VIEW' of a joun nal shaft for paper machinesconstructed in accordance with my invention;

Figure 2 is a longitudinal sectional view therethrough;

Figure 3 is a section Figure 2;

Figure 4: is a fragmentary side elevation, partially broken away, of awinder shaft including the stop blocks;

Figure 5 is a sectional view showing how the sections of the winder orjournal shaft are collapsed upon'one another to permit withdrawal of theshaft from a formed paon the line 33 of the segment which they oppose.These spacing blocks maintain the hinge blocks 12 centrally located andalso provide afurther support for the pins 13.

In; the present construction the spacing blocks 14' at one end of eachsection are preferably connected by a solid web 16 and this web isthickened toward the end of the sectionv and integrally connected withthe flange 17 of a trunnion 18. These trunnions are located at oppositeends of the sections, the trunnions at one end of the shaft having aflange 17 of a diameter equal to the mean diameter of the shaft when incontracted position, while the trunnion at the oppositeend has a flangeequal in diameter to the diameter of the shaft when in expandedposition.

Arranged upon the inner surface of each section 10 and 11' is a stopblock 19 in the form of an angle plate having one face 20 thereofabutting and conforming to the inner surface of the section to which thestop block is secured by rivets 21. j A second face into expande 22 isfiat and extends transversely of the section and at right angles to thewall of the section. These faces 22 are of, greater length than one-halfthe diameter of the shaftwhen in fully expanded position and come incontact with one another whenthe shaft is in this fully'expandedposition. This contact isassured by means of a spring 23 connecting thesections and under tension at all times. It will be obvious that a shaftof this construction will be held very firmly in its expanded positionwhen the trunnions 18 are placed injournals 24:, which are so spacedthatadjacentfaces of the journals abut the outerlfaces ofthe flanges 17since relative-movement of the sections at this time will be effectuallyprevented. Near one end of the shaft, the segments are formed rwithaligned slots 25, through which a lever 26 may be inserted andemployedto move the shaft from expanded to contracted position.

It will be obviousthatthe use of the stop blocks 19 may be resorted toin the construction of the winder shaft as shown in"- the patent, andforthe purposes of illustration I have shown such stop blocks as 0111--ployed with the section of the shaft having the half collars 27 andrings or washers 28, as described in my .prior patent, these halfcollars combining when the shaft is in fullyfexpanded position toprovide a bearing for coaction with the bearing 29 of the paper machine.

Since the device as hereinbefore described is capable of a certain rangeof change and modification without materially departing from the spiritof my invention, I do not limit myself to such specific'structure exceptas hereinafter claimed.

" I claim -1. The combination in a shaft of the type described of twosubstantially semicircular segments, pivotal connections. between thesections permitting the movement of the sections into engagement withone another or into expanded positions where the sections are separatedand constitute nearly a complete circle, a stop block secured to theinner surface of each section having a face extending transversely ofthe section and of a'width greater than the radius of the completecircle formed by said segments, said faces being, opposed and engagingone with the other when the segments are .in expanded relation, andyieldable means connecting the segments urging said faces intoengagement.

2. The combination in a shaft of the type described of two substantiallysemicircular segments, pivotal connections between the sectionspermitting the movement ofthe sections into engagement with one anotheror positions where the sections plete circle, a stop block secured tothe lnner surface of each section having a face extending transverselyofthe section and of facesbeing opposed and engaging one with the otherwhen the segments are in expanded relation, yieldable means connectingthe segments urging said faces into engagement, and bearings for saidshaft in which the shaft is engageable when the sections thereof are inexpanded position and unengageablewhen the sections are in contracted orpartially contracted position.

,3. The combination in a journal shaft of two substantially semicircularsegments, pivotal connections between the sections permitting movementof the sections into engagement wlth one another or into eX- pandedpositions where'the sections are separated and constitute nearly acomplete circle, a trunnion secured to each section, the trunnions beingsecured to the sections at opposite ends thereof and each having aflange, the flange of one of said sections being of a diameter equal tothe diameter of the sections when in expanded relation and the diameterof the other of the flanges being the same as or less than the meandiameter of the sections when in collapsed relation, and means normallyholding said sections in position with the ends thereof in engagementwith the first named flange and yieldably resisting movement of thesection bearing the last named flange out of such engagement.

4L. The combination in a journal shaft of tWo substantially semicircularsegments, pivotal connections between the sections permitting movementof the sections into engagement with one another or into expandedpositions where the sections are separated and constitute nearly acomplete circle, a trunnion secured to each section, the trunnions'beingsecured to the sections at opposite ends thereof and each having aflange, the flange of one of said sections being of a diameter equal tothe diameter of the sections when in expanded relation and the diameterof the other of the flanges being the same as or less than the meandiameter of the sections when in collapsed relation, means normallyholding said sections in position with the ends thereof in engagementwith the first named flange and yieldably resisting'movement 0f thesection bearing the last named flange out of such engagement, andbearings for said trunnions having their inner faces spaced apart adistance equal to the spacingbetween the outer faces of the flanges whenthe sections of the shaft are in expanded relation.

5. The combination in a shaft of'the type described of two substantiallysemicircular are separated and constitute nearly a com-segments, pivotalconnections between the sections permitting the movement of the sectionsinto engagement with one another or into expanded positions where thesections are separated and constitute nearly a complete circle, a stopblock secured to the inner surface of each section having a faceextending transveresly of the section and of a width greater than theradius of the complete circle formed by said segments, said faces beingopposed and engaging one with the other when the segments are inexpanded relation, yieldable means connecting the segments urging saidfaces into engagement, and bearings for said shaft in which the shaft isengageable when the sections thereof are in expanded position andunengageable when the sections are in contracted or partially contractedposition, the sections of said shaft being each provided at one end witha trunnion for engagement in one of said bearings, said trunnions havingflanges engaging adjacent faces of the bearings and fitting closelytherebetween when the sections of the shaft are in expanded position tothereby prevent movement of the sections into engagement with oneanother.

In testimony whereof I hereunto aflix my signature.

BENNETT LARSON.

